Stability & Shelf-life Validation
MDR Reference: Annex II, Section 6.1.4; Annex I GSPR 6.6
BPG Rev.4 Reference: Section 6.1.4
Service Item ID: mdr_sec06_stability
Applicability: Non-software devices with shelf-life claims (excluding software-only)
Overview
Stability and shelf-life validation demonstrates that the device maintains its safety and performance characteristics throughout its claimed shelf life. This includes both the device itself and its packaging, and is distinct from device lifetime validation which covers the in-use period.
Key Standards
| Standard | Title | Scope |
|---|---|---|
| ASTM F1980 | Accelerated aging of sterile barrier systems | Arrhenius-based accelerated aging methodology |
| ASTM D4169 | Performance testing of shipping containers | Transport simulation and distribution environment |
| EN ISO 11607-1:2020+A1:2023 | Packaging for terminally sterilised medical devices -- Part 1 | Packaging system requirements (overlaps with Packaging) |
| ICHE Q1A-Q1E | Stability testing guidelines | Applicable to drug-device combinations |
Key Deliverables
| Document | Description |
|---|---|
| Shelf-life Claim Justification | Rationale for claimed expiry date |
| Accelerated Aging Protocol & Report | Test design, Q10 factor, temperature, duration, results |
| Real-time Aging Plan | Concurrent real-time study design (if accelerated aging used) |
| Transport Simulation Report | Distribution environment testing per ASTM D4169 or ISTA protocols |
| Post-aging Functional Testing | Device performance after aging exposure |
Accelerated Aging (ASTM F1980)
- Based on the Arrhenius reaction rate theory
- Q10 factor: Typically Q10 = 2 (conservative); must be justified if different
- Accelerated aging temperature usually 55-60degC (must not exceed material limits)
- Accelerated aging time = (Desired shelf life) / Q10^((T_accelerated - T_ambient) / 10)
- Real-time aging is the gold standard: Accelerated aging supports initial market entry; real-time data must be completed concurrently
GSPR Mapping
| GSPR | Requirement |
|---|---|
| 6.6 | Shelf life demonstrated by appropriate testing |
| 11.5 | Safe transport and storage conditions |
Related Topics
- Packaging Validation -- Package integrity after aging
- Device Lifetime Validation -- In-use lifetime (distinct from shelf life)
- Sterilisation Validation -- Sterility maintenance throughout shelf life